Complete the Plot Lorenz curves and calculate a Gini coefficient for US income pre and post tax and transfers on the same diagram.

Distribution of income before federal transfers and taxes, 2016 Top 1 percent 16% Top 81-99 percent 39% Bottom 20 percent 4% Middle 60 percent 43% Note: Figures do not add to 100 due to rounding Source: Congressional Budget Office Distribution of income after federal transfers and taxes, 2016 Top 1 percent 13% Top 81-99 percent 35% Bottom -20 percent 8% Middle -60 percent 46%